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प्रश्न
The speed of light is maximum in ______.
विकल्प
vacuum
glass
diamond
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उत्तर
The speed of light is maximum in vacuum
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संबंधित प्रश्न
State the speed of light in (a) air, (b) glass.
State whether light slows down or speeds up in the following cases :
Light going from glass to water.
A light ray passes from water to
- air, and
- glass.
In each case, state how does the speed of light change.
A light ray suffers reflection and refraction at the boundary in passing from air to water. Draw a neat labelled ray diagram to show it.
Numerical problem.
Light enters from air into a glass plate having refractive index 1.5. What is the speed of light in glass? (Ans: 2 × 108 ms–1)
Higher Order Thinking Skill.
What do you conclude about the speed of light in diamond. if the refractive index of diamond is 2.41?
Materials that allow light to pass through completely are known as ______ material.
Materials that allow light to pass through completely are known as transparent materials.
Define opaque material.
The speed of light decreases in a denser medium, light bends towards the normal.
